Stargate Atlantis, Season 3

[The closing scene of the episode, Rodney stands alone on one of the city's piers, talking with 'imaginary Carson']

Dr. Beckett:
How'd it go back on Earth?

Dr. McKay:
It was, it was awful. [Turns to Carson and smiles at him] Your family was amazing, though.

Dr. Beckett:
Aye, they are. Good turnout?

Dr. McKay:
Oh, packed the church.

Dr. Beckett:
Oh, that's good to hear!

Dr. McKay:
It's not gonna be the same round here without you.

Dr. Beckett:
Oh, you're telling me!

Dr. McKay:
You know, the universe is a big place. Who knows, maybe we'll bump into each other again.

Dr. Beckett:
Aye, who knows?

Dr. McKay:
You were the closest thing to a best friend I ever had. I'm really, really sorry. I should have just...

Dr. Beckett:
Hey. This isn't your fault.

Dr. McKay:
You're just telling me what I want to hear.

Dr. Beckett:
Well, that's what best friends do sometimes. And in this case it also happens to be true. Take care of yourself, Rodney.

Dr. McKay:
[Raises his hand] Goodbye, Carson.

[Carson fades out of existence whilst the view zooms out to see Rodney standing alone at the end of the pier as the episode ends]